package cn.xaut.XAUT迎春杯预热;

import java.util.Scanner;

/**
 * A - A + B Problem
 */
public class demoA {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        while (input.hasNextInt())
            System.out.println(input.nextInt() + input.nextInt());
    }
}
